1. What is Driveway Gradient?

Driveway gradient refers to the slope or incline of a driveway, expressed as a percentage or ratio. In Australia, driveway gradients are regulated by AS 2890 standards to ensure vehicle accessibility and safety.

2. How Does the Calculator Work?

The calculator uses the standard gradient formula:

Where:

• \( Rise \) — Vertical height difference (meters)
• \( Run \) — Horizontal distance (meters)
• \( Gradient \) — Slope expressed as percentage

Explanation: The formula calculates the steepness of a slope by comparing vertical rise to horizontal run.

3. Australian Standards AS 2890

Details: According to Australian Standard AS 2890, the maximum recommended driveway gradient is 1:14 (approximately 7.14%). This ensures vehicles can safely access the driveway without scraping or losing traction.

4. Using the Calculator

Tips: Enter the vertical rise and horizontal run in meters. Both values must be positive numbers. The calculator will provide gradient percentage and ratio.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum driveway gradient allowed in Australia?
A: The maximum recommended gradient is 1:14 (7.14%) according to AS 2890 standards for vehicle access.

Q2: How do I measure rise and run for my driveway?
A: Measure the vertical height difference from start to end (rise) and the horizontal distance along the driveway (run).

Q3: What if my driveway gradient exceeds 1:14?
A: Gradients steeper than 1:14 may require special design considerations, vehicle restrictions, or council approval.

Q4: Are there different requirements for different vehicle types?
A: Yes, commercial vehicles and emergency access may require gentler gradients. Always check local council regulations.

Q5: How does gradient affect driveway construction?
A: Steeper gradients require more careful drainage planning, appropriate surface materials, and may need additional safety features.